Variations of Tree-Ring and Foliar δ13C Values of Sabina przewalskii with Altitude
CHEN Tuo, CHEN Fa-hu, AN Li-zhe, LIU Xiao-hong
JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY . 2004, (6): 767 -771 .  DOI: 10.7522/j.issn.1000-0240.2004.0121